TRIAL FOR DEEP-SUBMICRON TRACK WIDTH RECORDING

Extremely narrow track width of deep submicron range is examined in pe rpendicular magnetic recording. Head field distribution of a single-po le head analyzed by 3-dimensional computer simulation results in a sha rp gradient, but relatively large cross-sectional area is required to maintain head field strength. Based on this design concept, a lateral single-pole head is described and proved to attain track width of 0.4 mu m. In addition, multilevel partial response appropriate to the new multitrack recording system is proposed.